Study on the velocity compensated method applied for the CSL mode suppression of CPW bend

Author

Hui Zhang ; Zengrui Li ; Junhong Wang

Author_Institution

Inf. Eng. Sch., Commun. Univ. of China, Beijing, China

fYear

2014

fDate

16-23 Aug. 2014

Firstpage

1

Lastpage

4

Abstract

In the CPW bend, two slots with different length will excite radiation due to the coupled slot line (CSL) mode. In order to suppress this radiation and keep signal in the two slots in phase, the velocity compensation method is studied in this paper, in which the velocity of signal propagating in the shorter slot is slowed down or speeded up in the longer slot. the CPW bends with three kinds of compensation techniques based on this method are studied and compared. The FDTD method and commercial software are employed to analyze these CPW bends, the results are compared with those of air-bridged CPW bends. Research results show that the CSL mode can be suppressed efficiently by the velocity compensated method, and the transmission performance is also improved significantly.

Keywords

coplanar waveguides; electrical engineering computing; electromagnetic wave propagation; finite difference time-domain analysis; slot lines; CPW bend; CSL mode suppression; FDTD method; commercial software; coplanar waveguide; coupled slot line; radiation excitation; radiation suppression; signal propagating velocity; velocity compensation method; Capacitance; Coplanar waveguides; Educational institutions; Loading; Microwave theory and techniques; Optical waveguides; Strips;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI

Conference_Location

Beijing

Type

conf

DOI

10.1109/URSIGASS.2014.6929171

Filename

6929171